Adding streaming HyperLogLog example using Algebird
Merge remote-tracking branch 'upstream/streaming' into streaming-eg-algebird

Conflicts:
	project/SparkBuild.scala
Dependencies and refactoring for streaming HLL example, and using context.twitterStream method
Streaming example using Twitter Algebird's Count Min Sketch monoid
Merge remote-tracking branch 'upstream/streaming' into streaming-eg-algebird
Bumping Algebird to 0.1.9
Adding documentation for HLL and CMS examples. More efficient and clear use of the monoids.
Merge pull request #480 from MLnick/streaming-eg-algebird

[Streaming] Examples using Twitter's Algebird library